Analysis On Eco-economical Effect Of Super High Yield Maize In North Of Liaoning Province

Assurance of food safe is one of the important assignments of agriculture. Major grainproducing areas in north of Liaoning Province as one of foundational areas of very importantyield areas in China, has great meaning in increasing food yield. There are two ways inimproving food-crop quality. One is expanding the plantation the other is increasing the yieldper unit area. According to.Chinese condition that depending on expanding the plantation isinviable, yet, the other way, which depends on increasing the yield per unit area is the onlyway to go.This thesis tries to search for a meaningful, practical and strategic approach by exploringand dynamic observation of physiological endex in super high yield maize in Food-crop-yieldarea in north of Liaoning Province. This task is one subtask of the compositive research anddemonstrate of Liaoning corn richness and high-efficiency technology under the science andtechnology project of state food richness.The Conclusions are as follow:1. Those crop field in north of Liaoning province with high fertility and irrigationd anddrainage condition, may practice super high yield into reality. If the idea of super high yieldtreatment will be carried out by observing physiological item of super high yield treatmentand CK, we need to meet severay conditions as follow: use the breed as Xianyu335 thatseni-dwarf, Lodging, high unit weight; use big ridge double line (double line in the top ofridge row space 40cm); planting in time and fine; semi-dwarf in reason(Xianyu335,82500 perhm²); fertilize in prescription; field manage carefully harvest in time.2. By analysis energy flowing, emergy, material flowing of farmland ecological systemsof super high yield maize and CK, we can see compare with CK, energy and material'sconversion efficiency of farmland ecologic system of super high yield maize was improvedevidently. The farmland of super high yield maize need more artificial auxiliary energy andmore quantity of N, P₂O₅,K₂O than CK, but the energy and material's conversion efficiency of super high yield farmland is higher than CK clearly. The energy conversion efficiency ofsuper high yield farmland achieve to 85.05%, 12.71 percentage points more than CK. Theconversion efficiency of N, P₂O₅, K₂O of super high yield farmland achieve to 56.58%,79.03% and 93.79%, 10.94, 12.9, 6.93 percentage points more than CK.3. By analysis and compare the ecology-economic benefit of super high yield treatmentand CK, the super high yield farmland has better eco-economical effect and social effect. Atthe economic effect aspect, the net income of super high yield farmland is 12127.5 yuan/hm²,but the net income of CK is 5662.3 yuan/hm², so the net income of super high yield farmlandis 6465.2 per hm² more than CK. Output-input ratio of super high yield farmland is 2.54, andthe output-input ratio of CK is 2.06, 23.3% more than CK. Therefore, developing the super highyield treatment on the north of Liaoning is one of the effectual ways which increases thenative farmers' income; At the ecology effect aspect, the conversion efficiency of the superhigh yield farmland is improved, which is a intensive agriculture and it contributes to thedeveloping of the livestock breeding and fertilizing soil; At the society aspect, search outeffective approach for increase grain output on major grain producing areas. Moreover, itcontributes to assurance of food safe in China and it enhances the farmers' positivity ofplanting corn. The local stockbreeding is indirect-developed by developing the super highyield maize, meantime, it develops the others industries which correlate to corn, boom thelocal economic.